A USB to I²C bridge reference guide (PDF!) from Microchip: Microchip’s SCSI USB to I²CTM bridge devices provide a USB to I²C bridge. The I²C bridge utilizes SCSI pass-through commands using the Mass Storage Class driver. The internal hub can have e.g., three ports enabled with two exposed externally. This document includes the following topics: • Example of […]
Author Archives: DP
Bus Pirate v3.6 back in stock
Bus Pirate v3.6 universal serial interface is back in stock at Seeed Studio. This is the updated v3.6 in a standard PCB footprint. You can get a simple laser-cut acrylic protector for this board for only 3 bucks. Bus Pirate is a hacking multi-tool that has the capability to interface with most IC bus protocols […]
Program your Arduino with a Android device
Jan Henrik wrote this Instructables demonstrating how to program an Arduino with Android device: in this Instructable I want to show you, how you can program your Arduino with your Android device. It is very simple and cheap. Also it allows us to program our Arduino where ever we want, this is usefull for permanently […]
Live Raspberry Pi power usage
Posts Raspberry Pi power usage to Xively, MobileWill’s latest project: Realtime graph of Raspberry Pi power usage on the web. So using Xiviely and my USB Tester I am logging voltage, current mWh and mAh to the web. Source code and designs are available on GitHub. Via the contact form.
Free PCB coupon via Facebook to 2 random commenters
Every Friday we giveaway some extra PCBs via Facebook. This post was announced on Facebook, and on Monday we’ll send coupon codes to two random commenters. More PCBs via Twitter on Tuesday and the blog every Sunday. Don’t forget there’s free PCBs three times every week: Free PCB Sunday. The classic. Every week, get free […]
Week in (p)review June 20, 2014
Here’s a summary of major developments over the last week. Free PCB Friday is coming up soon. ATX breakout board bench power supply, USB and serial enabled LCD backpack back are back in stock Using Bus Blaster + openOCD on OSX Mavericks Serial Protocol debugging with Ubuntu & Bus Pirate v4 Insomni’hack CTF 2014: Bus Pirate […]
Tesla Motors: All our patent are belong to you
Elon Musk, CEO of Tesla Motors writes: Yesterday, there was a wall of Tesla patents in the lobby of our Palo Alto headquarters. That is no longer the case. They have been removed, in the spirit of the open source movement, for the advancement of electric vehicle technology. Tesla Motors was created to accelerate the advent […]
Gesture based security lock project
Alan Parekh writes: Instead of using keys and codes for security this device that Ankur Thakkar, Darshan Shah and Saisrinivasan Mohankumar built as part of their ece4760 Final Project uses gestures to grant access. The system uses IR sensors to determine the movement of a persons hand within the detection area, after you train the […]
ATX breakout board bench power supply back in stock
The ATX breakout board bench power supply is back in stock at Seeed Studio. This board recycles an old computer PSU into a handy bench tool with 3.3/5/12/-12 volt supplies. You can get one for $14 at Seeed Studio. You can also get a Sick of Beige case for your ATX breakout board for $4 […]
R2R Ladder DAC
JamesNorth writes: This post is about an R2R Ladder DAC that I build one evening. I wanted to play around with the Arduino Mega 2560 board I have and this seemed like a perfect way to try it out. Below is the schematic for the DAC… This is an 8-bit DAC built-up from just resistors, […]
Reflow oven controller with graphics TFT
A reflow oven controller with graphics TFT by 0xPIT: Arduino-based reflow oven controller with: PID loop control Wave Packet and Phase Fired control for AC outputs graphic TFT LC-Display, drawing the temperature curves – using an Adafruit 1.8″ TFT or derivate display solely controlled using a cheap rotary encoder and it’s single button stores up to […]
Keithley 197 teardown and repair
Teardown and repair of Keithley 197 by Kerry Wong: After the meter arrived, I did a quick sanity check and everything appeared to be working fine except for those four silicone rubber momentary buttons on the left. The meter itself was well within spec as you can see from the picture shown below using the HP6113A 5V […]
5v/3.3v power supply PCB
MickM has been working on creating a power supply: Here is a simple but versatile power supply board. It uses either a TO-220 7805 or a TO-92 78L05 (or other voltages). Power LED is optional, and can be on-board or remote with a header. Power switch is optional, install a 2-pin header and cut the […]
Analog AC line monitoring box
Dilshan Jayakody writes: This is a quick post about our newly constructed AC line monitoring unit. This unit consists with analog AC voltmeter, frequency meter and ammeter. Both voltmeter and frequency meter are 2.5 × 2.5 inch in size and ammeter is 3.5 × 3.5 inch in size. All these panel meters are commonly available in market. Ammeter in […]
Using Bus Blaster + openOCD on OSX Mavericks
Alvaro wrote an article on using a Bus Blaster + openOCD on OSX Mavericks: I’ve been using the Dangerous Prototypes Bus Blaster along with openOCD to program/debug my LPC1769 microcontroller. It’s been a while since I did anything, so when I tried again last week and couldn’t get it to work, I was slightly confused. The […]
USB and serial enabled LCD backpack back in stock
USB and serial enabled LCD backpack is back in stock at Seeed Studio. This board connects HD44780-compatible character LCD screens to your USB port. It works with apps like LCD Smartie to show news, system stats, and more on an external LCD. Get USB and serial enabled LCD backpack for $16.95.
#FreePCB via Twitter to 2 random RTs
Every Tuesday we give away two coupons for the free PCB drawer via Twitter. This post was announced on Twitter, and in 24 hours we’ll send coupon codes to two random retweeters. Don’t forget there’s free PCBs three times a every week: Hate Twitter and Facebook? Free PCB Sunday is the classic PCB giveaway. Catch […]
Laser cut Mitre joints
Martin Raynsford of Just Add Sharks writes: Here at Just Add Sharks, we’ve been running some experiments using these cutting jigs and the results are pretty promising. The first and arguably most useful jig holds the material at 45 degrees to the laser beam. The panels that make up the box were cut to size […]
Serial Protocol debugging with Ubuntu & Bus Pirate v4
Marcus Jenkins has written an article on Serial Protocol debugging with Ubuntu & Bus Pirate v4: You can see how the Bus Pirate can get you up and running with a new serially-connected peripheral pretty quickly. You can get started with configuring the peripheral in no time to suss out your initialisation and wiring. The next […]
Pocket-sized ultrasonic ruler
Bergerab made this Instructables detailing the build of his DIY pocket-sized ultrasonic ruler: Today everything is digitalized. Most of us don’t bother to waste our time using maps, going to the record store, or even going to the DVD store anymore. So… why are so many people using tape-measures and rulers? Yes, they are reliable, but they […]